DE2130364C3 - - Google Patents

Description

The invention relates to a number transmitter for the production of dial-up connections in Nach Richtenneizen, in particular telephone and telex networks, in which each call number manually dialed by means of a dialing device in one electronic buffer memory is temporarily stored and several, electronic memory that can be optionally assigned for each

xo because a phone number is provided, we give way the stored phone numbers can optionally be read out repeatedly so that they can be sent out again.

From the German Auslegeschrift 1 146 126 is a number transmitter for operator stations in the hand-

lj mediated remote service is known, in which a so-called numeric transmitter is assigned several memories for receiving a call number. With the numeric transmitter, the user generates a call number signal, which in the usual !, Vc ^ e / in order to

ao building a connection sent out and besides is recorded in one of the multiple memories. The memories allow the user to by actuating the memories individually assigned repetitive loads to any at a later point in time, the individual call numbers in the memories are sent out again to initiate, for example, if the first attempt / ur establishment of the corresponding communication link did not lead to the goal. The feeding of the numbers dialed with the numeric transmitter or the corresponding call number signals in one of the memories takes place automatically. The user cannot \ err on a fin storage ten. He only has the possibility, by actuating a Um ^ ehaltorganes a memory in the a number to be repeated is stored would to lock against the numerator. This inevitably results in the next one free memory allocated to the numerator.

In the German Ausiegeschritt 1 146 126 is not specified. like iiei numeric transmitter with which the call number signals are generated; are formed in detail. From the "Siemens magazine". 39 (i ^l > ö5). Issue 1 . Pages 44 to 4 P. However, it can be seen that a numeric transmitter usually comprises a numeric keyboard for entering the dialing information and a buffer memory for receiving the dialing information entered, from which the dialing information. read out automatically and in the form of the Uv - 5c! icher. Dialing pulse is transmitted. Al-. In particular, capacitor and .Magnetkonispeicher are used in buffer storage. The call number transmitter is intended to provide help with dialing by automatically sending out the dialing information that can be entered relatively quickly via the numeric keypad at the correct, slower speed .

In the above-mentioned call number generator according to the German Auslegcschrift 1 146 126, the buffer memory presumably contained in the numeric generator there serves only as an intermediate link between a fast entry and a slow transmission of the call number, i.e. to generate a call number signal, as it is also obtained with the usual dial because the repetition function is carried by the multiple memories .

2 13C 364

The disadvantage of the known number transmitter is the fact that each number remains stored in one of the memories at least until a new number is dialed. The overview of the respective stored call numbers is also made more difficult, since a certain call number automatically gets into the next free memory, so the user has no direct influence on which memory receives a specific call number. This may not necessarily be a disadvantage with the intended use of the known number transmitter at a switching station, since there the vast majority of switching requests remain until the respective connection has been successfully processed, but only up to this point and an overview is guaranteed by the charge cards inserted in each case. When used for participant self-selection. will not be pursued nem first dial attempt, but often persist even after carried Eicher producing a corresponding compound in the operation of the known call sender, however, would unduly ^complicated: when many connection requests after e.

The invention is based on the object of providing a device that is especially suitable for self-selection of subscribers Telephone number transmitter for the repeated transmission of some stored by a dialing process To create phone numbers that are easy and clear to use despite their relatively simple structure.

A call number transmitter that solves this task and has the features mentioned at the outset is according to the invention characterized in that each call number for an optional transfer to one of the spokes ready to be accessed according to your choice and dispatch remains in the buffer memory, and that each memory is triggered by an actuation key Flip-flop circuit is assigned. in their one position the transfer of each in the buffer tank located call number in the assigned memory and in the other position the deletion this memory causes. Appropriately, each actuation key comprises an indicator lamp for the respective one Position of the assigned flip-flop.

While b, ^, the well-known number transmitter a buffer only to generate the call number signal is in the correct form. is used by the buffer memory of the number generator according to the invention for the automatic storage of each dialed number at the time of your choice and sending out. On the other hand, no phone number is saved from the cache without the user having to do something transferred to one of the memories. This has the advantage that the user can decide whether a Call number is to be entered in a memory for the purpose of repeated transmission, first must decide after the number has already been sent out once and the corresponding connection may have been established and it was possible to determine whether the selected connection is busy or not, or whether the connection is renewed for another reason, for example because of a query is desired! When the user decides to transfer a phone number to a memory has. can in the transfer in accordance with the invention Call number transmitter can be done very easily by simply pressing one of the operating buttons. He is completely free in the selection of the respective memory, so that he can determine Assign phone numbers to specific memories, thereby making it easier for you to keep an overview can. The fact that a phone number only gets into one of the memories when the User positively determined to repeat

ίο has the advantage that the memory for repeated sending of the phone numbers by means of an automatically working query circuit queried without the repeated transmission of phone numbers, whose repetition is actually not wanted at all. Likewise, numbers can be repeated is no longer wanted after it has already been saved, for example because it has already repeated a few times by simple

ία Press the same button with which they saved wun! .1. to be deleted again, without the need to store a new one Call number required. With the help of the indicator lamps that are appropriately assigned to the operating buttons

J5 the user can easily list the occupied by the distinguish between unoccupied memories. Overall made possible therefore the number transmitter according to the invention is flexible despite being very easy to use and versatile handling of dial-up connections. Since the new number transmitter exclusively is made up of purely electronic components, it takes up little space, requires little maintenance and works noiseless.

It is preferred as a buffer storage and as a storage tank to use dynamic shift registers i; which the numbers are ccdierter in binary Form are storable. Dynamic shift registers are very inexpensive as single-line components available in fully integrated form and, in this form, allow those familiar to those skilled in the art Advantages of the integrated circuits, namely the small space requirement, the high operating speed and the great operational reliability to take advantage of. The storage of the call numbers ir. digit-by-digit binary coded form results in the best utilization of the available storage capacity and a particularly simple circuit technology.

The known dialing devices generate Rufi! Ummerr: signals, which are serially column-based from digit signals whose time interval is not uniform due to manual operation. on the other hand the content of dynamic shift registers runs on the basis of a certain. fixed clock frequency strictly periodically. To adapt the in

with regard to the operation of the dynamic shift registers asynchronous generation of the number signaie to the Pcnodicitut of the shift register ivl a dialing device, which a phone number *, imal in the form of digit impulses according to a number

code generated, typically aUo at the known, windable dial, provided according to an important development of the invention that the Ziffcrnimpalssericn can be fed to a binary coder with a parallel output to which a storing

Parallel-series converter is connected, the content of which is indicated by one at the end of each digit pulse series synchronized pulse generated in each case serially in the buffer memory 'transferable is. In this training

the individual series of digits are first converted into a multi-digit, parallel binary signal at the speed of their arrival, i.e. relatively slowly, which is stored in a buffer . From this the binary signal is read out serially at the end of the ZifTernimpulsscric and before the arrival of the next ZifTernimpulsseric with the relatively high clock frequency of the dynamic shift register. So it becomes the buffer or the parallel service converter. which can be formed, for example, by a small shift register that can be switched from parallel to serial operation, is advantageously used both for speed adjustment and for adapting the serially working memory to the parallel output of the binary coder.

To generate the synchronizing pulses, a comparison device can be provided that is connected to the outputs of a digit counter that is switched on at the end of each digit pulse and to dl ·; Output of a position counter is connected by a clock pulse generator for the shift register via a frequency divider wcitcrecschaltelen and when the counter readings are the same, it emits a comparison pulse to a synchronization circuit, which forwards each comparison pulse that occurs at the end of a digit pulse series as a synchronization pulse. The position counter is incremented synchronously with the dynamic shift registers and therefore identifies the dynamic position of the shift register that is free for access by its respective counter reading. The frequency divider connected upstream of the position counter takes into account that the binary digits of the call number are each represented by a multi-digit binary signal, for the storage of which several positions of the shift register are necessary. If, for example, the normal 8421 code is used, i.e. four dynamic positions are required to store each digit, a frequency divider with a division ratio of 1: 4 is used and the position counter is switched accordingly with every fourth advance of the shift register. Of course, the scope of counting of the position counter depends on the memory size or the number of dynamic positions of the shift register, so that one full cycle of the shift register always corresponds to one full cycle of the position counter. The digit counter keeps track of the number of digits already dialed by a phone number. The use of the coincidence of the two counters to form the sync pulses means that digits with the same place value are always assigned to the same dynamic positions of the shift registers and are therefore very easy to find again with their place values in the shift registers. The synchronization circuit prevents the coincidences occurring during the input of a digit, which are caused by the relatively high clock frequency and the correspondingly rapid rotation of the position counter, from taking effect and leading to incorrect control of the input.

To achieve a particularly simple and clear operation of the number transmitter according to the invention, it has proven to be useful that each memory is assigned an actuation button with momentary contact, by means of which one in one position the storage in the assigned memory and in the other position the deletion of the memory causing flip-flop circuit is triggerable. In the case of dynamic shift registers as a memory, for example, the storage can be done in such a way that the input of the register is keyed and, after the register has circulated, its circulating feedback is closed. To delete it, simply disconnect the circulating feedback, which means that the existing content is lost.

ίο Expediently includes each operating button an indicator lamp for the respective position of the associated flip-flop, so that the user with a Look can distinguish the occupied from the unoccupied memory.

In the following the invention with further advantageous details on the basis of a by a Block diagram illustrated Ausführungsbcispicls explained in more detail. The embodiment relates on the establishment of telephone connections, all statements apply analogously, of course, just as well for the establishment of telex or other communications.

The call number transmitter shown as an exemplary embodiment is connected to the telephone set

»5; at 1 common design leading trunk line 2 connected. The telephone set 1 has the well-known dial as a dialing device for the phone numbers, by means of which a call number signal in the form of Zillernimpiilsserien according to a counting end can be generated and delivered to the trunk line 2. In other words, will for each digit chosen iler call number generates a number of pulses equal to the number with a defined pulse duty factor. A time interval, the so-called free choice time, is set between the individual series of numerical impulses complied with in order to be able to distinguish the individual digits. The free choice rate is nor sometimes 1 second and is forced to open the dial when dialing / u egg is enough.

The call number transmitter has a coupling circuit for coupling to exchange line 2. In this, the digit pulses are separated from the other signals present on the exchange line, in particular the Tonsignalcn. The separation can take place in a conventional manner by means of timers that are matched to the F-frequency and the pulse duty factor of the digit pulses. In addition, the coupling circuit detects whether the receiver of telephone set 1

lifted or hung up. The coupling circuit outputs the separated digit pulses to a binary encoder formed by a binary counter 4 In addition, using the free selection time, it generates digit length pulses, soft shell pulses of the individual number pulse series. The digit length pulses arrive at a synchronizer circuit 5 and to the switching input one; Digit counter 6. Finally, the coupling circuit 3 also generates a DC voltage signal that be:

placed on the receiver of the telephone set 1 and the reset input of the numeric counter 6 as well as the one input of an OR element 7, which is connected upstream of the reset input of the binary counter A. Both the digit counter 6 and aucr

6 $ the binary counters 4 can be reset by the Gletch voltage signal.

The binary counter 4 is counted by each digit pulse advanced by one count position. He owns a lot

7 8

parallel outputs for a four-digit binary signal, five parallel outputs that correspond to its respective counter

that keep the respective counter reading of the counter status in binary form. To the extent indicating the 8421 code. The binary signal reaches the positiops counter 12 and the outputs of the

A 5-bit comparator 14 is connected to the four parallel inputs of a 4-hit ZilTemzäliier <i.

Schicbercgister 8 executed!) Parnllel-Scrien-Wand- 5 concluded that for the duration of each coincidence of the

lers. The 4-bit shift register 8 works normally - both counters have a comparison pulse

wise in parallel operation, so that the respective binary outputs to the synchronization circuit5. This directs

signal is saved. one immediately after you have finished dialing a digit,

By means of a synchronization pulse emitted by the synchronization circuit 5 after the number length pulse has dropped, the 4-bit signal register is switched to drive. In this operating mode, a gate circuit for the comparison is gradually created by the falling edge of the digit length clock pulse, which includes a flip-flop that can be set by a pulse operating at 10 kHz and originates in the gcsctz clock generator9, a gate circuit for the comparison and puts its content in a serial Buffer pulse is scanned and by the falling or return memory. Which can be reset again by a dynamic 100-bit edge of the comparison pulse. Shift register 10 with an upstream input Since the digit counter 6 increases by e after each digit ^; ns writing and circulating circuit 11 is formed. When it is switched on, the occurrence of 100-bit shift register 10 is shifted by the same clock of the coincidence with respect to the shift register 10 generator 9 as the small 4-bit shift register and 20 by four dynamic positions each time, so that the synchronous advanced with this. In addition to the dialed digits of a call number one after the other in 4-bit Schicbcrcgistcr also the registered and certain circular circuit 11 marked by the position counter 12 receives the sync pulse, which dynamic positions are stored. The there the buffer memory during the same time, resetting of the digit counter 6 by hanging up the to which the 4-Bit-Schicberegistcr 8 its contents from 25 receiver of the telephone set 1 ensures that switches over to registered. The circulation - this with each new election its counting bet zero feedback is closed when the receiver is lifted - begins.

sen and separated when the receiver is on the hook; During the sync pulse with the circuit described so far, the shift register input is automatically gated on every number dialed without any action. Corresponding to the four-digit character 30 user in the 100-bit shift register or the ter of the binary signal and the buffer memory for storing it, whereby a stored required four dynamic positions of the call number has been shifted register 10 by hanging up the handset, the synchronizing signal one of the triggers will. To call a number for the purpose of the duration of four clock pulses the same duration. repeated query and transmission or from an-

The sync signal will finally be able to save longer for the reasons why, five second inputs of the OR element cs7 are fed to the reset function, such as the buffer memory, as a dynamic input of the binary counter 4 and this 100-bit shift register provides memory 15a until after Jeter Number of each digit provided with its fall. You get your clock pulse ends or its trailing edge back to zero. In this case, from the clock generator 9 and therefore work, it is ensured that the prior to the occurrence 40 is in chronological order with the buffer memory. All memories 15 are each sync pulse reached counter reading, which is zero via a flip-flop circuit 16 n, 16b ... or binary counter, and thus the binary signal of the respective selected output line 17 transferred to the buffer 16 e for writing and erasing to an output line 17 is connected, which constantly corresponds to the content digit. A total of 100-bit leads are in the buffer memory. Each flip-flop circuit 16 shift register because of the selected four-digit code 45 is an actuation key 18a, 18 b ... or 18 e with twenty-five digits can be stored. Assigned momentary contact by actuating it

To the digits stored there with their. Set the flip-flop circuit can be triggered in each case. In order to be able to find the value again, a five-and-one position causes the flip-flop circuit 16 to effect the twenty-stage position counter working in the ring and to store the contents of the buffer memory in FIG. The position counter 12 receives its 50 memories or the 100-bit shift register 1S and in switching pulses from the clock generator 9 via one of the other positions the deletion of the 100-bit frequency shift register 15, which operates at a division ratio of 1: 4, by separating the circulating divider 13, so that he's in sync with the 100-bit feedback. Each operating key 18 comprises a shift register 10 rotates and for each rotation the indicator lamp, which takes the same time as this in the storage position. The individual counter 55 associated flip-flop circuit switched on and in the status of the position counter indicate that each clear position is switched off, with the storage of four specific dynamic positions of the solution of the indicator lamp of the associated flip 100-bit shift register. The position counter 12 is controlled by a flop circuit.

sits five parallel outputs, at which its respective memory 15 is a query, not shown

HgCT counter reading appears in binary coded form. 60 assigned to the circuit with which the stored In the same way, the also has twenty-five call numbers optionally also repeatedly auslesbai

Numerous levels and after each choice of a digit through and into a sequence of digits suitable for dialing

Digit length pulse incremented digit counter 6 «pulse series can be converted back. 1 sheet of drawings

Claims (5)

Patent claims: 1. Call number transmitter for the production of dial-up connections in communication networks, in particular telephone and teletype networks, in which each call number manually dialed by means of a dialing device is temporarily stored in an electronic buffer memory and several call numbers from the buffer memory are used to record the call numbers that are dialed and each sent out in the form of a call number signal , by appropriate actuation of switching elements, optionally assignable electronic memories are provided for one call number each, from which the stored P. call numbers can optionally be repeatedly read out for re-transmission, characterized in that each call number can be optionally transferred to one of the memories (15 ) remains accessible in the buffer memory (10) after its selection and transmission, and that each memory is assigned a flip-flop circuit (16) which can be triggered by a respective actuation key (18). which in one position causes the transfer of the respective call numbers in the buffer memory to the assigned memory and in the other position causes the deletion of this memory. 2. Call number transmitter according to claim 1, characterized in that each actuating button (18) an: indicator lamp for the respective position of the assigned F] ip (1o |) v.naltung (lfv) includes. 3. Rufnummergebci according to claim 1 or 2. characterized in that the Puiier.speiehi.-r (10) and the memory (15) are formed by dynamic · .: shift registers, in v. elchem the Call numbers can be stored digit by digit in binary coded form. 4. Call number transmitter according to claim 3 for a dialing device which has a number signal in the form of series of digits according to eim'm Counting code generated, characterized. da3 the number pulse series to a binary encoder (4) can be supplied with a parallel output, at soft a storing parallel-series converter (8) is connected is, the content of which is generated by a synchronous pulse generated at the end of each digit pulse series each can be transferred serially into the buffer memory (10). 5. Call number transmitter according to claim 4. d
characterized in that a comparison element (14) is provided for generating the sync pulses, which is connected to the outputs tine, to the output of a number counter (6) and to the output of a clock pulse generator (9) for the shift register (10 , 15) via a frequency divider (13) switched position counter (12) is connected and when the counter readings are the same, each Weil emits a comparison pulse to a synchronizing circuit (5), which conducts each comparison pulse that occurs at the end of a series of digit pulses as a sync pulse.